Fire detector



FIG. 1 is a perspective view of a fire detector showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a side elevational view thereof, the opposite side being amirror image thereof; and,

FIG. 6 is a bottom plan view thereof.

The ornamental design for a fire detector, as shown and described.